Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc4928eb448fbf3…

MALICIOUS

PDF

45.3 KB Created: 2020-08-19 14:04:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 778224ee1dfc0bba16eb6eb2557a49fd SHA-1: 2a9cf61e51270d69eb21629df53e182ba6f26b9a SHA-256: 9fc4928eb448fbf3b75c0ebcf30af7d631dfdadc1955c978155371d1fd03c636
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=quartz+2d+programming+guide+pdf'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains references to 'quartz 2d programming guide pdf' and the wkhtmltopdf tool, suggesting a lure to disguise malicious intent. The presence of a malicious redirector indicates a likely phishing or malware distribution attempt.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=quartz+2d+programming+guide+pdf
    • http://loxetukil.acironworks.com/uploads/1/3/2/6/132680839/3515239.pdf
    • http://files.arttherapy-vt.org/uploads/1/3/0/7/130739452/paxipexibugezuto.pdf
    • http://mikoxugu.chirocore.org/uploads/1/3/0/9/130969600/sirijak_mejag_jukajukizum.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/giresazesipuxometebelukaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3584/files/89836657232.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/3201691716.pdf
    • https://cdn.shopify.com/s/files/1/0437/2906/0001/files/53000216153.pdf
    • https://cdn.shopify.com/s/files/1/0429/7519/9391/files/lipiwetivajejuxete.pdf
    • https://cdn.shopify.com/s/files/1/0453/2790/9019/files/bonetusadorafimuzuzixa.pdf
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/12115125031.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/facebook_page_cover_photo_size_2019_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3281/files/fogozinuxeruwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3761/3461/files/1874760383.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/3201691716

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007399.bin
d88b1056dc72fac31e6cbf9977d7440db077adf296d104b208e79e3129b7dd87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7399 5392 bytes
font_01_sfnt_off000085ec.bin
475999cf2759ea78b8a0eba8d5d384b114211a5879180253f7f4424eac7cf833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85EC 9936 bytes

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